I don't see a huge difference in his overall speed or ability to shoot, or the qualtiy of his teammates.

OV's shot is his shot, but the explosiveness in his legs is gone. The difference in acceleration now vs five years ago is really remarkable and that's what's affecting his shot totals.

He's not fat anymore, so it must just be something he lost with age. Jagr lost a similar amount of explosiveness around the same age, but his other tools combined with his stratospheric hockey IQ allowed him to adjust and not miss a beat.